# Introduction

The Ulawk API brings the **sourced profile**, **changes** and **gazette PDFs** of the companies you follow — built from Trade Registry Gazette notices — into your own systems. Every fact carries the notice behind it, a verbatim quote and its place on the gazette page.

## What you can do

- **Monitor:** add a company by registry office and number and watch it being prepared ([Quickstart](/en/gelistirici/hizli-baslangic/)).
- **Profile:** identity, officers, capital, ownership, name/address, articles — every record with its [source trail](/en/gelistirici/kaynak-izi/).
- **Changes:** one feed with fixed [categories](/en/gelistirici/degisiklik-kategorileri/); same-day [webhooks](/en/gelistirici/webhooklar/).
- **Documents:** gazette PDFs, page images, all of a company's gazettes in one ZIP.
- **AI:** reach the same data from your assistant over [MCP](/en/gelistirici/mcp/).

## Basics

| Topic | Value |
|---|---|
| Base URL | `https://ulawk.com` |
| Format | UTF-8 JSON; PDF, PNG and ZIP endpoints return the file itself |
| Auth | `X-API-Key` + `X-API-Secret` ([details](/en/gelistirici/kimlik-dogrulama/)) |
| Limit | 600 requests per key per hour |
| Field names | Turkish, as in the source records |
| Definition | [OpenAPI 3.1](/en/gelistirici/openapi.json) · [llms.txt](/en/gelistirici/llms.txt) |

> **Try first:** create a sandbox key in the dashboard; call every endpoint with made-up DENEME-… companies without touching live data or your allowance. The **Try it** panel on each endpoint page uses this key.